Built to Rule was a building blocks toyline from Hasbro that is compatible with such leading brands as Lego. These sets were released from 2003 to 2005.Sets are usually based upon existing toys and characters from the Hasbro brand, such as Tonka, G.I. Joe and Transformers: Armada. Small number of Transformers: Energon Built to Rule sets were released to test the market, but they were never released widely.
Transformers Built to Rule toys were expected to be big sellers in 2003.[1] It was predicted by some groups to be mong top sellers.[2]